TITLE: Multiplying/Dividing by Negative Numbers

Mr. P. Collins

X -3 4 12 -2.5 -5 6 -0.5

-2

-5

8

1.5

9

-4

-0.5

Copy & Complete this multiplication table...

TITLE: Negative Numbers

-9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9

•When you are subtracting you are getting less. If you’re getting less you go to the LEFT of the number line!

•If you are adding you are getting more. Getting more of something is all right and so you go to the RIGHT of the number line!

Mr. P. Collins

Copy & Complete:

1) -6 +2 5) -5 - 2 9) -4 -12) 8 - 5 6) 5 - 9 10) 3 - 23) -4 - 5 7) 8 - 24) 1 - 8 8) 7 - 14

TITLE: Negative Numbers

Mr. P. Collins

What happens here?

1) -4 + -4 = 2) -5 - -6 =3) 9 - - 2 =4) 6 + -4 =5) -8 - -5 =6) -8 + -5 =

When two signs are next to each other they turn into just 1 sign...-- turns into a +-+ turns into a –+- turns into a –++ turns into a +

TITLE: Negative Numbers

Mr. P. Collins

a 12 4 12 -2 -8 -9

b 7 9 4 -1 6 -4 7

a-b -6 -3 -2 -12 -15

COPY & COMPLETE

TITLE: Negative Numbers

Mr. P. Collins

Copy & Complete; subtract the right hand square from the left to get the square below...

5 3 -1 6 4

2 4

-33

-9

TITLE: Negative Numbers

Mr. P. Collins

X -8 4 12 -2 -5 6 -9

2

-5

-8

8

9

-4

-0.5

Copy & Complete this multiplication table...

TITLE: Multiplying/Dividing by Negative Numbers

Mr. P. Collins

X -8 4 12 -2 -5 6 -9

2

-5

-8

8

9

-4

-0.5

Copy & Complete this multiplication table...

Mr. P. Collins

TITLE: Multiplying/Dividing by Negative Numbers

When Multiplying with negative numbers:

- × - = ++ × + = + - × + = - + × - = -If the signs are the same the answer is positive.If the signs are different the answer is negative.

Mr. P. Collins

TITLE: Multiplying/Dividing by Negative Numbers

When Multiplying with negative numbers:

- × - = ++ × + = + - × + = - + × - = -

If the signs are the same the answer is positive.If the signs are different the answer is negative.

Try these:

1) -8 × -9 = 2) -8 × 5 = 3) 5 × -4 = 4) 9 × 4 = 5) -7 × 6 = 6) -6 × -2 = 7) 6 × 2 = 8) 6 × -4 =

REMEMBER

Mr. P. Collins

TITLE: Multiplying/Dividing by Negative Numbers

When Dividing with negative numbers:

- ÷ - = ++ ÷ + = + - ÷ + = - + ÷ - = -If the signs are the same the answer is positive.If the signs are different the answer is negative.

Mr. P. Collins

TITLE: Multiplying/Dividing by Negative Numbers

Try these:

1) -12 ÷ 4 = 2) -9 ÷ -3 = 3) 10 ÷ -4 = 4) 18 ÷ 6 = 5) -20 ÷ 4 = 6) -8 ÷ -2 = 7) 16 ÷ 4 = 8) 16 ÷ -4 =

REMEMBER

When Dividing with negative numbers:

- ÷ - = ++ ÷ + = + - ÷ + = - + ÷ - = -

If the signs are the same the answer is positive.If the signs are different the answer is negative.